Control characters in doc strings

[Eli Zaretskii]

With the current master I see the following warnings:

  In toplevel form:
  progmodes/cc-langs.el:682:18: Warning: docstring contains control char #x0d 
(position 15)
  progmodes/cc-langs.el:704:18: Warning: docstring contains control char #x0d 
(position 10)
  progmodes/cc-langs.el:841:18: Warning: docstring contains control char #x0c 
(position 9)
  progmodes/cc-langs.el:841:18: Warning: docstring contains control char #x0d 
(position 11)
  progmodes/cc-langs.el:1836:18: Warning: docstring contains control char #x0d 
(position 9)

However, I don't think I see any such control characters there, at
least not when I invoke "C-h v".